SPI Receive Interrupt

[EthanMankins]

I am trying to make a very simple SPI ISR to read the RXDR and store the value to a buffer. However, I cannot get the ISR to even trigger without using HAL_SPI_Receive_IT(). I do not want to use the callbacks or the default IRQ generated by cube. I currently just have the following in my ISR:

void spiISR(SPI_HandleTypeDef *hspi){
	if (__HAL_SPI_GET_FLAG(&hspi1, SPI_FLAG_RXNE)) {

		rxBuffer[rxIndex] = SPI1->RXDR;
		// Increment index and wrap around if necessary
		rxIndex = (rxIndex + 1) % RX_BUFFER_SIZE;

		__HAL_SPI_CLEAR_OVRFLAG(&hspi1);

	}
}

Since I don't want to use the generated IRQ I do this:

void SPI1_IRQHandler(void)
{
  /* USER CODE BEGIN SPI1_IRQn 0 */
	spiISR(&hspi1);
	return;
  /* USER CODE END SPI1_IRQn 0 */
  HAL_SPI_IRQHandler(&hspi1);
  /* USER CODE BEGIN SPI1_IRQn 1 */

  /* USER CODE END SPI1_IRQn 1 */
}

I have turned on the following:

  MX_SPI1_Init();
  /* USER CODE BEGIN 2 */
  HAL_NVIC_EnableIRQ(SPI1_IRQn);
  __HAL_SPI_ENABLE_IT(&hspi1, SPI_IT_RXNE);

This would leave me to believe that the ISR should trigger when the fifo is not empty; however that is not the case.
I have ensured data is being transferred to the board on an oscilloscope, but the board shows no indication of receiving data

[gbm]

Have you configured the SPI? Show the code.